Answer:
Helper T cells (CD4+)
Explanation:
In the case of hummoral immunity, Helper T cells help in the differentiation of B cells into plasma B cells . The plasma B cells are then involved in the production of antibodies for specific kind of antigens. In the case of cell-mediated immunity helper T cells are involved in releasing cytokines and help differentiate the T cells into cytotoxic T cells. In the case of cell mediated immunity, the affected cell undergoes the process of lysis.
While norepinephrine is majorly a neurotransmitter (in synaptic transmission)
, it also acts as a hormone produced by
the adrenal gland. It is usually secreted as a stress hormone, just like
cortisol. It increases heart rate, blood flow
in skeletal muscles, production of glucose by the liver, especially in the
fight-or-flight response.
Answer:
It contains partial positive and negative charges.
Explanation:
A hydrogen bond is a non-covalent bond between a partial negative charge and a partial positive charge. Hydrogen bonds tend to be weak. Hydrogen bonds tend to be transient.
The answer to your question is letter A